A tower inner wall spraying equipment

Abstract

This invention provides a tower inner wall spraying device, belonging to the technical field of tower inner wall spraying. It includes a traveling unit with a lifting unit above it, and a rotating spraying unit installed at the power output end of the lifting unit. The traveling unit includes a chassis with drive wheel sets and driven wheel sets at its front and rear ends, respectively. The drive wheel set includes two drive wheel frames, each with a front caster wheel set vertically rotatably mounted on it, and the front caster wheel sets are connected to a traveling drive mechanism. The driven wheel set includes two driven wheel frames, each with a rear caster wheel set vertically rotatably mounted on it. The beneficial effect of this invention is that the caster structure can automatically adjust its angle to maintain a larger contact area with the inner wall of the tower, ensuring smoother equipment operation.

Description

Technical Field

[0001] This invention belongs to the field of tower inner wall spraying technology, and specifically relates to a tower inner wall spraying device. Background Technology

[0002] With the continuous expansion of the wind power industry, the demand for wind turbine towers is increasing daily. At the same time, this also places higher demands on the quality and efficiency of the spraying operations on the inner walls of the towers.

[0003] Currently, existing tower inner wall spraying devices mainly consist of a traveling section, a lifting section, and a rotary spraying section. The traveling section primarily includes a chassis, drive wheels, and steering wheels, which work together to move the entire tower inner wall spraying device inside the wind turbine tower. The lifting section mostly uses multi-stage telescopic cylinders as its core, along with support rails and fixed plates, to stably lift the rotary spraying section. The rotary drive section mainly includes a rotary telescopic boom and a spray gun, and the rotation of the telescopic boom drives the spray gun to achieve efficient spraying.

[0004] However, existing internal wall spraying devices have significant drawbacks in practical applications. Specifically, the inner wall of existing wind turbine towers is not a completely flat plane but rather a curved surface with a certain slope. The casters of existing internal wall spraying devices only have conventional walking and steering functions and lack adaptive adjustment capabilities, failing to tilt and rotate according to changes in the slope of the tower's inner wall. This results in a small contact area between the casters and the tower's inner wall, making them prone to slippage when moving within the curved cylinder. Consequently, uneven spraying and missed areas are likely to occur, significantly impacting the spraying quality of the tower's inner wall. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a tower inner wall spraying device with adaptive capability, and to enable its casters to automatically adjust their angles to maintain a large contact area with the inner wall of the tower, ensuring smoother operation of the device and avoiding slippage; at the same time, it can adapt to the inner walls of towers with different curvatures and slopes, and can move relatively smoothly in towers of different specifications.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a tower inner wall spraying device, comprising a traveling unit, a lifting unit disposed above the traveling unit, and a rotating spraying unit installed at the power output end of the lifting unit; the traveling unit comprises a chassis, and a drive wheel set and a driven wheel set are respectively disposed at the front and rear ends of the chassis; the drive wheel set comprises two drive wheel frames, each drive wheel frame having a front wheel set vertically rotatably mounted thereon, the front wheel set being driven by a traveling drive mechanism, and the front wheel set being able to rotate in a vertical plane perpendicular to the traveling direction and in a vertical plane parallel to the traveling direction; the driven wheel set comprises two driven wheel frames, each driven wheel frame having a rear wheel set vertically rotatably mounted thereon, the rear wheel set being able to rotate in a vertical plane perpendicular to the traveling direction and in a vertical plane parallel to the traveling direction. At this time, since both the front and rear wheel sets in this invention can rotate in a vertical plane perpendicular to the walking direction, when they move inside the tower, they can automatically adjust the posture of the front and rear wheel sets according to the curvature of the inner wall of the tower, and keep them in contact with the inner wall of the tower over a large area, thereby ensuring that the entire equipment runs more smoothly inside the tower, and thus ensuring the coating quality of the inner wall of the tower.

[0007] Furthermore, the front caster assembly includes two casters, symmetrically arranged on both sides of the travel drive mechanism. A front axle is fixedly mounted in the middle of each caster, with its axis perpendicular to the travel direction. The front axle is connected to the corresponding travel drive mechanism. The front caster assembly also includes two front axles, symmetrically arranged on both sides of the travel drive mechanism. The axis of the front axles is parallel to the travel direction. The ends of the two front axles, separated by a distance, are rotatably connected to the drive wheel frame, while the ends of the two front axles, close to each other, are fixedly connected to the corresponding travel drive mechanism. In this way, the invention, on the one hand, can transmit power from the travel drive mechanism to the corresponding two casters through the cooperation of the front axles and the travel drive mechanism, thereby controlling the forward and backward movement of the entire tower inner wall spraying equipment. On the other hand, the cooperation of the front axles and the drive wheel frame ensures that the entire front caster assembly can rotate freely in a vertical plane perpendicular to the travel direction, adapting to the curvature of the tower inner wall.

[0008] Furthermore, the rear caster assembly includes an auxiliary frame, with two casters rotatably mounted on the lower part of the auxiliary frame, and a hinge seat fixedly mounted on the upper part of the auxiliary frame; a hinge seat is also provided at the lower end of the driven wheel frame, and the hinge seat and hinge seat are hinged together by a hinge shaft, with the axis of the hinge shaft parallel to the direction of travel. In this way, the present invention can ensure that the entire rear caster assembly can rotate freely in a vertical plane perpendicular to the direction of travel through the cooperation of hinge seat one and hinge seat two, thus adapting to the curvature of the tower's inner wall.

[0009] Furthermore, springs are provided on both the left and right sides of the hinge seat. The upper end of the spring is fixedly connected to the driven wheel frame, and the lower end of the spring is fixedly connected to the auxiliary frame. The rotation amplitude of the auxiliary frame is controlled by the elastic potential energy of the spring to prevent it from deviating from the predetermined running trajectory due to excessive swinging.

[0010] Furthermore, the drive wheel assembly also includes a steering component, which is simultaneously connected to the two drive wheel frames and controls the two drive wheel frames to rotate in the horizontal plane, thereby changing the travel direction of the entire tower inner wall spraying equipment.

[0011] Furthermore, the steering assembly includes a steering drive motor mounted on the chassis. The power output end of the steering drive motor is connected to a steering reducer, which is also connected to two front horizontal transmission rods. One end of each front horizontal transmission rod is connected to a driving reversing gear via a reduction gearbox. The driving reversing gear is vertically oriented. The driving reversing gear meshes with a driven reversing gear, which is fixedly connected to a corresponding drive wheel frame. The drive wheel frame or the driven reversing gear is horizontally rotatably mounted on the chassis and can rotate together in the corresponding direction under the action of the steering drive motor, thereby changing the travel direction of the entire tower inner wall spraying equipment.

[0012] Furthermore, the driven wheel assembly also includes a lifting component, which is simultaneously connected to the two driven wheel frames and controls their vertical movement. Thus, when the tower inner wall spraying equipment provided by this invention travels inside the conical tower, the height of the two rear wheel assemblies can be flexibly adjusted via the liftable driven wheel frames to ensure the chassis remains level, thereby ensuring the centerline of the rotating spraying unit always remains on the centerline of the conical tower.

[0013] Furthermore, the lifting assembly includes a lifting drive motor mounted on the chassis. The power output end of the lifting drive motor is connected to a lifting reducer. The lifting reducer is also connected to two lifting machines. The two lifting machines are mounted on the chassis, and the power output end of the lifting machines is fixedly connected to the corresponding driven wheel frame. Under the action of the lifting machines, the two driven wheel frames can be driven to move vertically to adjust the height of the two rear caster sets. This ensures that the rotation center of the rotary spraying unit is always on the geometric center line of the geometric body and is in working condition within the vertical cutting plane, thereby improving paint adhesion.

[0014] Furthermore, a wire harness storage rack is provided above the traveling unit. In actual operation, the wire harness storage rack can be used to wind and store the paint wires, air supply wires, and power cables connected to the entire tower inner wall spraying device, thus preventing them from becoming tangled or knotted during the travel of the tower inner wall spraying device. Simultaneously, after the tower inner wall spraying device completes the spraying operation, the present invention can rotate the winding drum in the wire harness storage rack to wind excess paint wires, air supply wires, and power cables around the rack, facilitating the operator's transport of the entire tower inner wall spraying equipment.

[0015] As can be seen from the above technical solutions, the present invention has the following advantages:

[0016] 1. Both the front and rear caster sets in this invention can rotate in a vertical plane perpendicular to the direction of travel. That is, both the front and rear caster sets in this invention can automatically adjust their posture according to the curvature of the inner wall of the tower and fit against the inner wall of the tower over a large area, thereby reducing slippage and ensuring that the equipment runs smoothly inside the tower, thus ensuring uniform spraying and improving the spraying quality of the inner wall of the tower.

[0017] 2. The present invention can precisely control the rotation of the drive wheel frame in the horizontal plane through a steering assembly composed of components such as a steering drive motor and a steering reducer, thereby realizing the steering function of the equipment;

[0018] 3. The present invention can use a lifting assembly composed of a lifting drive motor, a lifting reducer and a lifting machine to control the lifting of the driven wheel frame, so as to ensure that the center line of the rotating spraying unit is always in the center of the tower when the equipment moves inside the conical tower.

[0019] 4. The present invention limits the rotation range of the auxiliary frame by springs set on both sides of the hinge seat to prevent it from swinging excessively and deviating from the running track; at the same time, when dealing with the undulation of the inner wall of the tower, it can both buffer and reduce shock, and ensure that the driven wheel is in contact with the inner wall, so as to avoid equipment jamming and overturning and ensure operational safety.

[0020] 5. This invention can use a wire harness storage rack to effectively wind and store paint wires, air supply wires, and power cords, preventing the wires from getting tangled and knotted during operation; at the same time, after the operation is completed, the wires can be neatly arranged by the wire reel, making it convenient for operators to move the equipment and improving work efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the walking unit in this invention;

[0024] Figure 3 This is a schematic diagram of the drive wheel assembly in this invention;

[0025] Figure 4 This is a schematic diagram of the cooperation structure between the driven wheel frame and the auxiliary frame in this invention.

[0026] In the diagram: 100, Walking unit; 200, Lifting unit; 300, Rotary spraying unit; 400, Wiring harness storage rack; 101, Chassis; 102, Lifting platform; 103, Lifting reducer; 104, Lifting drive motor; 105, Walking drive mechanism; 106, Steering drive motor; 107, Front horizontal transmission rod; 108, Gearbox; 109, Hinge seat one; 110, Spring; 111, Hinge 112. Caster seat 2; 113. Driven wheel frame; 114. Caster wheel 2; 115. Auxiliary frame; 116. Rear caster wheel set; 117. Drive wheel frame; 118. Caster wheel 1; 119. Front axle 2; 120. Hinge shaft; 121. Front caster wheel set; 122. Driven reversing gear; 123. Driven reversing gear; 124. Steering assembly; 125. Lifting assembly; 126. Steering reducer. Detailed Implementation

[0027] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0028] like Figure 1 As shown, the present invention provides a tower inner wall spraying device, which includes a traveling unit 100, and components such as a lifting unit 200, a power distribution cabinet, and a wire harness storage rack 400 disposed above the traveling unit 100. Moreover, a rotary spraying unit 300 is installed at the power output end of the lifting unit 200, and the corresponding tower inner wall spraying operation is realized through the rotary spraying unit 300.

[0029] like Figure 2 As shown, the walking unit 100 includes a chassis 101, with drive wheel sets and driven wheel sets respectively disposed at its front and rear ends. Wherein, as Figure 3As shown, the drive wheel assembly includes two symmetrically arranged drive wheel frames 116, which are located below the chassis 101 and have a hollow cylindrical structure. The invention also includes a walking drive mechanism 105 within the inner cavity of each drive wheel frame 116. A front caster wheel assembly 121 is mounted on the lower part of the drive wheel frame 116 and is connected to the walking drive mechanism 105 for rotation. Specifically, in this embodiment, the front caster wheel assembly 121 includes two casters 117, symmetrically arranged on the left and right sides of the walking drive mechanism 105. A front axle 118 is fixedly mounted in the middle of each caster 117. The axial direction of the front axle 118 is perpendicular to the walking direction. The end of the front axle 118 is connected to the corresponding walking drive mechanism 105, and there is a gap between the walking drive mechanism 105 and the drive wheel frame 116. The front caster wheel assembly 121 also includes two front axles 119, which are symmetrically arranged on the front and rear sides of the travel drive mechanism 105. The axial direction of each front axle 119 is parallel to the travel direction. The two ends of the two front axles 119 are rotatably connected to the drive wheel frame 116, and the ends of the two front axles 119 are fixedly connected to the corresponding travel drive mechanism 105. Thus, in addition to transmitting power from the travel drive mechanism 105 to the two corresponding casters 117 through the cooperation of the front axles 118 and the travel drive mechanism 105 to control the forward and backward movement of the entire tower inner wall spraying equipment, the invention also ensures that the entire front caster wheel assembly 121 can rotate freely in a vertical plane perpendicular to the travel direction through the cooperation of the front axles 119 and the drive wheel frame 116, adapting to the curvature of the tower inner wall.

[0030] The upper parts of the two drive wheel frames 116 are connected to a steering assembly 124, which drives the two drive wheel frames 116 to rotate in the horizontal plane. Specifically, in this embodiment, the steering assembly 124 includes a steering drive motor 106 mounted on the chassis 101. The power output end of the steering drive motor 106 is connected to a steering reducer 126. The two power output ends of the steering reducer 126 are simultaneously connected to two front horizontal transmission rods 107. One end of the front horizontal transmission rod 107 is connected to the power output end of the steering reducer 126, and the other end of the front horizontal transmission rod 107 is connected to a driving reversing gear 123 via a reduction gearbox 108. The driving reversing gear 123 is vertically oriented. The driving reversing gear 123 meshes with a driven reversing gear 122. The driven reversing gear 122 is fixedly connected to a drive wheel frame 116 on the corresponding side. The drive wheel frame 116 or the driven reversing gear 122 is horizontally rotatably mounted on the lower surface of the chassis 101 via bearings. At this time, under the action of the steering drive motor 106, the present invention can drive the drive wheel frames 116 on both sides to rotate together in the corresponding direction, so as to realize the change of the walking direction of the entire tower inner wall spraying equipment.

[0031] like Figure 2 , Figure 4As shown, the driven wheel assembly includes two symmetrically arranged driven wheel frames 112 and a lifting assembly 125 disposed above the chassis 101. Specifically, in this embodiment, the lifting assembly 125 includes a lifting drive motor 104 mounted on the chassis 101. The power output end of the lifting drive motor 104 is connected to a lifting reducer 103. The lifting reducer 103 is also connected to two lifting mechanisms 102. Both lifting mechanisms 102 are preferably screw jacks or worm gear jacks. The two lifting mechanisms 102 are mounted on the chassis 101, and their power output ends are fixedly connected to the corresponding two driven wheel frames 112, controlling the vertical lifting and lowering of the two driven wheel frames 112. Additionally, the invention also includes a rear caster wheel assembly 115 vertically rotatably mounted at the two driven wheel frames 112. The rear caster assembly 115 includes an auxiliary frame 114. A hinge seat 109 is fixedly installed at the upper middle position of the auxiliary frame 114, and a hinge seat 211 is installed at the lower middle position of the driven wheel frame 112. The hinge seat 211 and the hinge seat 109 are hinged by a hinge shaft 120, the axis of which is parallel to the walking direction. Springs 110 are provided on both sides of the hinge seat 109. The upper end of the spring 110 is fixedly connected to the driven wheel frame 112, and the lower end of the spring 110 is fixedly connected to the auxiliary frame 114. Two casters 213 are rotatably mounted on the lower part of the auxiliary frame 114. In this way, the present invention can ensure that the entire rear caster assembly 115 can rotate freely in a vertical plane perpendicular to the walking direction through the cooperation of the hinge seat 109 and the hinge seat 211, so as to adapt to the curvature of the inner wall of the tower. On the other hand, the height of the two rear caster sets 115 can be flexibly adjusted by the liftable driven wheel frame 112 to ensure that the chassis 101 always remains horizontal, thereby ensuring that the center line of the rotary spraying unit 300 always remains on the center line of the conical tower.

[0032] Based on this, when using the present invention for tower inner wall spraying operations, on the one hand, the front caster wheel set 121 and the rear caster wheel set 115 in the present invention can automatically adjust their posture according to the curvature of the tower inner wall and fit against the tower inner wall over a large area, thereby reducing slippage and ensuring that the equipment runs smoothly inside the tower, thus ensuring uniform spraying and improving the spraying quality of the tower inner wall; on the other hand, the present invention can use the lifting assembly 125, which is composed of components such as the lifting drive motor 104, the lifting reducer 103 and the lifting machine 102, to control the lifting of the driven wheel frame 112, ensuring that when the equipment moves inside the conical tower, the center line of the rotating spraying unit 300 is always kept at the center of the tower.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tower inner wall spraying device, comprising a traveling unit (100), a lifting unit (200) disposed above the traveling unit (100), and a rotary spraying unit (300) installed at the power output end of the lifting unit (200); the traveling unit (100) comprises a chassis (101), and a drive wheel set and a driven wheel set are respectively disposed at the front and rear ends of the chassis (101); characterized in that, The drive wheel assembly includes two drive wheel frames (116), each drive wheel frame (116) having a front caster wheel assembly (121) vertically rotatably mounted thereon. The front caster wheel assembly (121) is connected to a walking drive mechanism (105) via a transmission. The front caster wheel assembly (121) is capable of rotating in a vertical plane perpendicular to the walking direction and in a vertical plane parallel to the walking direction. The driven wheel assembly includes two driven wheel frames (112), each driven wheel frame (112) having a rear caster wheel assembly (115) vertically rotatably mounted thereon. The rear caster wheel assembly (115) is capable of rotating in a vertical plane perpendicular to the walking direction and in a vertical plane parallel to the walking direction. The front caster wheel assembly (121) includes two casters (117). The two casters (117) are symmetrically arranged on both sides of the walking drive mechanism (105); the two casters (117) are fixedly installed with front wheel axles (118) in the middle. The axial direction of the front wheel axles (118) is perpendicular to the walking direction. The front wheel axles (118) are connected to the corresponding walking drive mechanism (105). The front caster set (121) also includes two front wheel axles (119). The two front wheel axles (119) are symmetrically arranged on both sides of the walking drive mechanism (105). The axial direction of the front wheel axles (119) is parallel to the walking direction. The two front wheel axles (119) are rotatably connected to the drive wheel frame (116) at opposite ends. The two front wheel axles (119) are fixedly connected to the corresponding walking drive mechanism (105) at near ends.

2. The tower inner wall spraying equipment according to claim 1, characterized in that, The rear caster assembly (115) includes an auxiliary frame (114), on which two casters (113) are rotatably mounted. A hinge seat (109) is fixedly installed on the upper part of the auxiliary frame (114). A hinge seat (111) is provided at the lower end of the driven wheel frame (112). The hinge seat (111) and the hinge seat (109) are hinged together by a hinge shaft (120), and the axis of the hinge shaft (120) is parallel to the direction of travel.

3. The tower inner wall spraying equipment according to claim 2, characterized in that, Springs (110) are provided on both the left and right sides of the hinge seat (109). The upper end of the spring (110) is fixedly connected to the driven wheel frame (112), and the lower end of the spring (110) is fixedly connected to the auxiliary frame (114).

4. The tower inner wall spraying equipment according to claim 1, characterized in that, The drive wheel assembly also includes a steering component (124), which is simultaneously connected to the two drive wheel carriers (116).

5. The tower inner wall spraying equipment according to claim 4, characterized in that, The steering assembly (124) includes a steering drive motor (106) mounted on the chassis (101). The power output end of the steering drive motor (106) is connected to a steering reducer (126). The steering reducer (126) is also connected to two front horizontal transmission rods (107). One end of the front horizontal transmission rod (107) is connected to a drive reversing gear (123) via a reduction gearbox (108). The drive reversing gear (123) is vertically axially arranged. The drive reversing gear (123) meshes with a driven reversing gear (122). The driven reversing gear (122) is fixedly connected to the corresponding drive wheel frame (116). The drive wheel frame (116) or the driven reversing gear (122) is horizontally rotatably mounted on the chassis (101).

6. The tower inner wall spraying equipment according to claim 1, characterized in that, The driven wheel set also includes a lifting assembly (125), which is simultaneously connected to two driven wheel frames (112).

7. The tower inner wall spraying equipment according to claim 6, characterized in that, The lifting assembly (125) includes a lifting drive motor (104) mounted on a chassis (101). The power output end of the lifting drive motor (104) is connected to a lifting reducer (103). The lifting reducer (103) is also connected to two lifts (102). The two lifts (102) are mounted on the chassis (101), and the power output end of the lifts (102) is fixedly connected to the corresponding driven wheel frame (112).

8. The tower inner wall spraying equipment according to claim 1, characterized in that, A wire harness storage rack (400) is provided above the walking unit (100).

Images